My biology education research centers around both students' sense of belonging in STEM courses and how students incorporate mathematical ideas into their biology learning. My background is in ecology, evolution, and behavior, where I've explored mutualistic interactions between different species of bacteria. I find mutual reliance -- both in education and in biology -- to be endlessly fascinating.

Hammarlund, S. P., Scott, C., Binning, K. R., & Cotner, S. (2022). Context Matters: How an Ecological-Belonging Intervention Can Reduce Inequities in STEM. BioScience, 72(4), 387-396.

Creech, C., Just, J., Hammarlund, S., Rolle, C. E., Gonsar, N. Y., Olson, A., ... & Cotner, S. (2022). Evaluating the Representation of Community Colleges in Biology Education Research Publications following a Call to Action. CBE—Life Sciences Education, 21(4), ar67.

Chacón, J. M., Hammarlund, S. P., Martinson, J. N., Smith Jr, L. B., & Harcombe, W. R. (2021). The ecology and evolution of model microbial mutualisms. Annual Review of Ecology, Evolution, and Systematics, 52, 363-384.

Hammarlund, S. P., Gedeon, T., Carlson, R. P., & Harcombe, W. R. (2021). Limitation by a shared mutualist promotes coexistence of multiple competing partners. Nature communications, 12(1), 619.

Hammarlund, S. P., & Harcombe, W. R. (2019). Refining the stress gradient hypothesis in a microbial community. Proceedings of the National Academy of Sciences, 116(32), 15760-15762.

Hammarlund, S. P., Chacón, J. M., & Harcombe, W. R. (2019). A shared limiting resource leads to competitive exclusion in a cross‐feeding system. Environmental microbiology, 21(2), 759-771.